Four in a Row

How to play

1. Players take turns dropping one disc into a column.
2. The disc falls to the lowest empty space in that column.
3. Line up four of your discs in a row — across, up and down, or diagonally — to win.
4. If the board fills up and nobody has four in a row, it’s a draw.

Controls

• Click or tap a column to drop your disc there.
• Keyboard: ← → to choose a column, then Enter or ↓ to drop. Number keys 1–7 drop straight into that column.
• U undoes a move. Against the computer, it takes back your move and the computer’s reply.
• Click a player’s name to change it.
• Players take turns going first in each new game.

Computer levels

• Easy – makes plenty of mistakes.
• Medium – blocks you and looks a few moves ahead.
• Hard – looks ten moves ahead. Good luck.

Tip: the middle column is part of more lines of four than any other column.